3. The genetic code is commaless, which means that no codon is reserved for punctuations. It means that after one amino acid is coded, the second amino acid will be automatically, coded by the next three letters and that no letters are wasted as the punctuation marks (Fig.
Summer solstice is the first day of summer - it's usually between June 20th and June 23rd. In 2016, the summer solstice takes place on June 20th. We know it's summer because the earth's axis tilts toward the sun from June to September - this means warmer weather and longer days.
But Mobile gets the short end of the stick in Alabama: 14 hours, eight minutes and one second of daylight -- that's at least 20 fewer minutes on the day of the summer solstice. Why the days get shorter but hotter. The summer solstice may be the longest day of the year, but it won't be the hottest.